(Reuters) – May sales of new vehicles in the United States rose an estimated 2 percent as low unemployment and strong consumer confidence helped mitigate the impact of rising interest rates and fuel prices, Ford Motor Co executives said on Friday.

Ford estimated full-year industry sales could fall slightly to the high 16 million to low 17 million range, as automakers trim low-margin sales to fleet customers and deal with an increase in used cars coming off lease to compete with new vehicles.

Last year, U.S. auto sales dropped 2 percent after a record high of 17.55 million in 2016.

May sales results were mixed.

Fiat Chrysler (FCHA.MI)(FCAU.N) said on Friday its U.S. sales in May climbed 11 percent to 214,294, on the strength of retail deliveries to individual customers.

The automaker said retail deliveries of 167,785 vehicles were the highest since July 2005. That figure topped the 163,796 vehicles delivered to retail customers by Ford in May.

Ford said retail sales were 163,796, while total sales, including those to fleet customers, rose 0.7 percent to 242,824.

Ford said sales of its best-selling F-series pickup were up 11.3 percent to 84,639. Fiat Chrysler said its Jeep brand sales jumped 29 percent to a record 97,287.

Toyota Motor Corp (7203.T) said U.S. sales dipped 1.3 percent to 215,321, while Nissan Motor Co said May sales were down 4.1 percent to 131,832.

The seasonally adjusted annual sales rate in May was estimated at 17 million, according to analysts polled by Reuters.

U.S. auto sales have been bumpy this year – down in February, up in March, down again in April – as consumers continue to shift away from sedans into trucks and SUVs, which are generally more expensive and generate higher profits.